Lack of acceleration

Tiny
TOMMY SQUYRES
  • MEMBER
  • 2002 SATURN L200
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
Car ran great until I got gas one day, backfired about 2 blocks from station.
Light came on pulled codes and replaced the throttle position sensor. Light came back on and now slow take off but will rev to about 4500 then lays down.
Pulled codes and replaced the fuel pressure regulator. Still no acceleration. Can get the car to highway speeds no problem, but try and pass anything and yup lays down. Have to take time to get up to speed. Exhaust pressure is fine, idle is fine, and runs fine, until you try to get moving.
Sunday, July 21st, 2019 AT 6:07 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,854 POSTS
It sounds like the timing chain may have jumped one or more teeth lets confirm this by doing a compression test. Here is a guide to help you:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please run down this guide and report back.
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Tuesday, July 23rd, 2019 AT 2:32 PM

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